摘要
固定式周围剂量当量率仪广泛分布于核电厂内部,用于常规连续监测或核事故后应急监测。由于采用固定安装,不便于拆卸送往计量实验室进行校准。为了确保固定式周围剂量当量率仪的量值准确,结合蒙特卡罗方法研制了周围剂量当量次级标准电离室和便携式γ射线辐照装置,并开展原位校准实验。将原位校准因子与实验室得到的校准因子进行比较分析,结果证明利用便携式γ射线照射装置配合周围剂量当量次级标准电离室能够较好的解决固定式周围剂量当量率仪的原位校准难题。
Fixed ambient dose equivalent radiation ratemeter is widely distributed in the nuclear power plants,for conventional continuous monitoring or nuclear accident emergency monitoring.It is not easy to disassemble the fixed installation and send it to the metrology laboratory for calibration.In order to ensure the accuracy of fixed ambient dose equivalent radiation ratemeter,the Monte Carlo method has been used for the design of ambient dose equivalent secondary standard ionization chamber and portable gamma ray irradiation device,and on-site calibration experiment has been carried out.The on-site calibration factors have been compared to the calibration factors obtained in laboratory,and the results showed that on-site calibration problems can be solved using ambient dose equivalent secondary standard ionization chamber and portable gamma ray irradiation device.
作者
高飞
徐阳
肖雪夫
倪宁
侯金兵
Gao Fei;Xu Yang;Xiao Xuefu;Ni Ning;Hou Jinbing(Division of Radiation Metrology,China Institute of Atomic Energy,Beijing,102413,China)
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2018年第6期111-115,共5页
Nuclear Power Engineering
关键词
原位校准
周围剂量当量
便携式γ射线辐射场
蒙特卡罗
On-site calibration
Ambient dose equivalent
Portable gamma ray irradiation field
Monte Carlo
